// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <pollux/exec/prefixsort/tests/utils/EncoderTestUtils.h>

namespace kumo::pollux::exec::prefixsort::test {

namespace {

/// The decode method will only be used in testing scenarios. In production
/// code, we have no scenarios that require decoding a normalized key.
void decodeNoNulls(char* encoded, int64_t& value) {
  value = *reinterpret_cast<uint64_t*>(encoded);
  value = __builtin_bswap64(value ^ 128);
}

} // namespace

void encodeInPlace(std::vector<int64_t>& data) {
  const static auto encoder = PrefixSortEncoder(true, true);
  for (auto i = 0; i < data.size(); i++) {
    encoder.encodeNoNulls(
        data[i], (char*)data.data() + i * sizeof(int64_t), sizeof(int64_t) + 1);
  }
}

void decodeInPlace(std::vector<int64_t>& data) {
  for (auto i = 0; i < data.size(); i++) {
    decodeNoNulls((char*)data.data() + i * sizeof(int64_t), data[i]);
  }
}

} // namespace kumo::pollux::exec::prefixsort::test
